[Stable and unstable chromosome aberrations in human blood lymphocytes in vitro after gamma irradiation].

Radiation-induced (137Cs-gamma-rays) aberrations in the first chromosome in human peripheral lymphocytes were investigated using FISH technique. It was shown that the most of detectable aberrations were translocations (about one half) often appearing with deletions: about 1/3 of the number of translocations were dicentrics; rings and insertions were rare.